Pump attachment



-'(N0 Modem H. W. JONES.

PUMP ATTAGHMENT.

.. No. 567,272. Patented Sept. 8, 1896.

fl '14 F UNITED STATES PATENT OFFICE. I

HUGH TV. JONES, OF PLYMOUTH, PENNSYLVANIA.

PUMP ATTACHMENT.

SPECIFICATION forming part of Letters Patent No. 567,272, datedSeptember 8, 1896.

' Application filed May 2,1800. Serial No. 500,003. (No model.)

zen of the United States, residing at Plymouth,

in the county of Luzerne and State of Pennsylvania, have inventedcertain new and useful Improvements in Pump Attachments; and

I do declare the following to be a full, clear, and exact description ofthe invention, such as will enable others skilled in the art to which itappertains to make and use the same, reference being had to theaccompanying drawings, and to the letters of reference marked thereon,which form a .part of this specification.

This invention relates to certain new and useful improvements inattachments for steam-pumps, and especially to a pump in which mechanismis provided to cause a partial rotary motion to the piston connected tothe cut-off valve which reciprocates in the steam-box, this rotarymotionbeing produced by a rocking lever which has suitable crankand-leverconnection with the said piston-rod, and actuated by a roller carried bythe piston attached to the reciprocating head in the steam-cylinder.

More particularly, my invention relates to the provision of anattachment to a steampump of the character described, by which the saidrocking lever may be adjusted so as to take up wear on the roller whenthe latter becomes Worn, so as not to throw the valve, or to rotate thesame sufficiently to do effective work.

To these ends and to such others as the invention may pertain the sameconsists, fur ther, in the novel construction, combination, andarrangement of the parts, as will be hereinafter more fully described,and then specifically defined in the appended claims. I clearlyillustrate my invention in the accompanying drawings, which, with theletters of reference marked thereon, form a part of this specification,and in which drawings similar letters of reference indicate like partsthroughout the several views, in which- Figure 1 is a side elevation ofa steam-pump having my attachment secured thereto. Fig. 2 is an enlargeddetail view of the casting, having an elongated aperture therein, inwhich the adjusting-bolt is held. Fig. 3 is a sectional view through thecasting to show the set-screws carried therein. Fig. 4 is a crosssectionthrough the piston-rods, casting, and rock-shaft.

Reference now being had to the details of the drawings by letter, Adesignates a steamcylinder in which works a piston-rod B, and O is avalve-rod which reciprocates a cut-01f valve within the steam-chest D.This valverod 0 is designed to make a partial rotary movement as it isreciprocated, so as to effectually operate valves,whereby the saidpistonhead is first brought into proper position to take steam, andwhich piston is then driven by the steam independent of the engine, thisrotary movement being common in valve-operating mechanisms, as, forinstance, in the Knowles patent, No. 36,656, of October 14, 1862, andwhich forms no part of this invention. This rotary movement is effectedby means of the rocking lever E, which is pivoted on the bolt F, heldwithin the elongated aperture g of the casting G. One end of the.

said rocking lever, as at e, is pivoted to a rod K, which in turn isconnected to an arm M through the medium of the rod N. This arm M isrigidly secured to the collar 0, which is keyed to the valve 0.

The casting G is bolted or otherwise sccured to the rod P, and a rollerQ is journaled on a projecting portion of the pistonrod B, and the underside of the rock-shaft E is designed to travel on this roller, saidroller being adapted, as the piston-rod carrying the same isreciprocated, to contact with the under side of the pivoted lever E torock the same, thus causing the valve-rod O to make partial rotarymovements in its forward-and-backward movement.

The bolt F, on which the rock-shaft is j ournaled, is mounted in theelongated aperture of the casting and is held thereto by means of thenut R, and the contracted end of the bolt behind the screw-threads isapertured at f to receive the set-screw F, whereby the bolt maybelowered when the roller Working under to bind against the upper side ofthe bolt to hold the same against the set-screw in an ad justcdposition.

From the foregoing it will be seen that by my improvement I am able toreadily adjust the rocking shaft to compensate for any Wear on theroller, so as to cause the valves to perfectly operate.

Having thus described my invention, What I claim to be new, and desireto secure by Letters Patent, is I 1. In an adjusting feature for arocking shaft of a pump of the character described, the combination Witha casting having an elongated aperture, a stub shaft or bolt adjustablyheld therein, 01: the piston-rod B, the roller carried thereon, of therock-shaft mounted 011 the said bolt, the valve-rod C, and connectionsbetween same and the rockshaft, Whereby, as the piston-rod B isreciprocated the Valve-rod C is caused to make a partial rotarymovement, substantially as shown and described.

2. In combination with the casting G provided With an elongatedaperture, a bolt F, a set-screw carried in a perforation in said bolt, abinding-screw mounted in the casting and adapted to bear against thebolt to retain the same in an adjusted relation, substantially as shownand described.

In testimony whereof I affix my signature in presence of two Witnesses.

HUGH IV. JONES.

Witnesses:

JOHN GOLIGHTLY, J. IV. HARRIS.

